// Copyright 2022 Tokamak contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//  Created by Andrew Barba on 5/20/22.
//

import TokamakCore

public struct HTMLTitlePreferenceKey: PreferenceKey {
  public static var defaultValue: String = ""

  public static func reduce(value: inout String, nextValue: () -> String) {
    value = nextValue()
  }
}

public struct HTMLMetaPreferenceKey: PreferenceKey {
  public static var defaultValue: [HTMLMeta.MetaTag] = []

  public static func reduce(
    value: inout [HTMLMeta.MetaTag],
    nextValue: () -> [HTMLMeta.MetaTag]
  ) {
    value += nextValue()
  }
}
